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Pair of Linear Equations in Two Variables

CH03 Question Bank

CBSE_CH03_QUESTION_BANK

Grade 10

Question:

Using substitution, if $x+y=5$ and $x-y=1$, the value of $x$ is:

$1$
$2$
$3$
$4$

Step-by-Step Solution

Key Concept: Add the two equations to eliminate $y$, or substitute directly.

Adding the equations: $2x=6\Rightarrow x=3$. [1.0 Mark]

Correct Answer: $3$

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